World Resorts Saint Lucia Castries Weather

Castries 7 Days Forecast

15.08
sat
Day
82°F
W 25 mph
Precip.
48%
Night
79°F
W 21 mph
Precip.
36%
16.08
sun
Day
84°F
W 19 mph
Precip.
11%
Night
81°F
W 15 mph
Precip.
20%
17.08
mon
Day
84°F
W 16 mph
Precip.
5%
Night
81°F
W 14 mph
Precip.
12%
18.08
tue
Day
84°F
W 12 mph
Precip.
5%
Night
79°F
W 7 mph
Precip.
59%
19.08
wed
Day
86°F
W 9 mph
Precip.
13%
Night
81°F
W 6 mph
Precip.
16%
20.08
thu
Day
86°F
W 10 mph
Precip.
6%
Night
81°F
W 11 mph
Precip.
19%
21.08
fri
Day
84°F
W 16 mph
Precip.
13%
Night
81°F
W 16 mph
Precip.
13%

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 83.6°F. The highest and lowest sea temperatures during the month were 84.0°F and 83.1°F.

Air temperature in Castries, °F

Precipitation total in Castries, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Castries

Sunniest months:
December 4 days
March 4 days
September 4 days
Warmest months:
September 86.8 °F
October 86.0 °F
August 85.8 °F
Warmest sea temp:
September 84.8 °F
October 84.6 °F
August 84.0 °F
Coldest months:
January 81.8 °F
February 81.9 °F
March 82.1 °F
Rainiest months:
August 7 days
October 5 days
September 5 days
Windiest months:
June 15.8 mph
February 15.4 mph
July 15.0 mph

Castries on a weather map

Current weather
15:16
Castries
+82°F
W 24 mph
Feels like: +88°F
Precip.: 49%
Places in Saint Lucia:
Name
°F
Vieux Fort
+81°F
Castries
+82°F
24 Hours Forecast
Castries
Local time: 15:16
August 15, saturday
1800
81°F
W
22 mph
2100
79°F
W
23 mph
August 16, sunday
0000
79°F
W
21 mph
0300
79°F
W
17 mph
0600
79°F
W
19 mph
0900
82°F
W
19 mph
1200
84°F
W
19 mph
1500
84°F
W
19 mph
Units of measurement: °C / °F